Watson Laboratories has issued a recall on two prescription drugs it manufactures because one of its customers complained that pills were darker and thicker than usual. Larger pills could mean excessive amounts of the drug are included and could lead to health side effects for patients who take them.

According to a release from Watson Laboratories, the recall announced by the company includes Hydrocodone Bitartrate and APAP Tablets, USP 10 mg/500 mg capsules.

People who take too much acetaminophen could be at risk of severe liver injuries and could experience this if they accidentally ingest one of these oversize pills. Taking too much hydrocodone could lead to excessive sedation and possible respiratory difficulty or depression.

Elderly patients are most at risk of dangerous side effects if they’re victims of an unintended overdose, something likely to happen if they were to ingest these recalled pills.

Waston Laboratories’ recall includes the following Lot numbers: 519406A and 521759A. The pills included in the recall all have expiration dates of April 24. The company has provided the following information to make detecting defects with the pills: “The affected lots were distributed between 6/27/2012 and 7/18/2012 to wholesale distributors and retail pharmacies nationwide. The lot numbers can be found on the manufacturerâ€™s bottle label. Hydrocodone Bitartrate and Acetaminophen Tablets are approximately 0.6 inches in length, blue, bisected capsule shaped, with “Watson 540″ de-bossed on one side of the tablet.”